Storage device employing a flash memory
US6341085B1 · kind B1 · utility
86Cited by
70References
13Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 12, 2000 |
| Grant date | Jan 22, 2002 |
| Priority date | — |
| Expiry date | Sep 12, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/2022
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In a semiconductor disk wherein a flash memory into which data is rewritten in block unit is employed as a storage medium; a semiconductor disk comprising a data memory in which file data are stored, a substitutive memory which substitutes for blocks of errors in the data memory, an error memory in which error information of the data memory are stored, and a memory controller which reads data out of, writes data into and erases data from the data memory, the substitutive memory and the error memory. Since the write errors of the flash memory can be remedied, the service life of the semiconductor disk can be prolonged.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.